Is there BNF-like grammar to describe LLVM IR?

Question

I am wondering that whether there is a BNF-grammar to describe LLVM IR? like C BNF grammar describing C language, etc.

Answer 1

There is no published BNF grammar for LLVM IR. There are docs to describe the format and, of course, source code, mailing lists, and an IRC channel. Those places are far better sources of information than StackOverflow.